look up any word, like trill:
 
1.
Problems from the Book
Dude omfg pftb is so hard
by djmathman September 28, 2013
 
2.
Pray For The Best
Tom: Dude how do I get past this mob?
Riddle: Just throw an AOE run along the wall and pftb
by buxley July 30, 2008
 
3.
Peeing From The Butt
To have explosive diarhea so loose it feels like you are peeing from the butt.
Jebus...I drank so much last night I was PFTB all day today.
by roamer March 22, 2007